Study on Rules of Fault Stress Variation Based on Microseismic Monitoring and Numerical Simulation at the Working Face in the Dongjiahe Coal Mine
Joint Authors
Zhuang, Duanyang
Ma, Ke
Yuan, Fuzhen
Li, Quansheng
Wang, Zhenwei
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-10-01
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
Microseismic monitoring technology was used to study the real-time evolution of rock mass damage generated by a working face as it approached a fault in Dongjiahe Coal Mine.
The influence of vertical zoning of overlying strata on damage at the fault was analyzed.
Numerical simulation using finite element method based on meso-statistical damage theory was used to investigate the nonlinear and nonuniform failure behaviour of the rock mass near the fault.
The response of the fault stress to excavation activity and the rule of fault activation were examined.
The results show that the fault damage has segmental characteristics.
Microcracks are first generated at the fractured zone that is divided into lower, middle, and upper sections, located 30∼70 m, 120∼180 m, and 230∼280 m above the coal seam, respectively.
There was also a segmentation phenomenon in the stress response of fault.
The risk of fault activation was evaluated by using the ratio of shear stress to the maximum principal stress.
When the working face was 260 m and 140 m away from the fault, the activation risk at the upper-middle and lower sections began to increase, respectively.
When the fault was within 60 m, the risk of fault activation was highest.
American Psychological Association (APA)
Ma, Ke& Yuan, Fuzhen& Zhuang, Duanyang& Li, Quansheng& Wang, Zhenwei. 2019. Study on Rules of Fault Stress Variation Based on Microseismic Monitoring and Numerical Simulation at the Working Face in the Dongjiahe Coal Mine. Shock and Vibration،Vol. 2019, no. 2019, pp.1-12.
https://search.emarefa.net/detail/BIM-1211475
Modern Language Association (MLA)
Ma, Ke…[et al.]. Study on Rules of Fault Stress Variation Based on Microseismic Monitoring and Numerical Simulation at the Working Face in the Dongjiahe Coal Mine. Shock and Vibration No. 2019 (2019), pp.1-12.
https://search.emarefa.net/detail/BIM-1211475
American Medical Association (AMA)
Ma, Ke& Yuan, Fuzhen& Zhuang, Duanyang& Li, Quansheng& Wang, Zhenwei. Study on Rules of Fault Stress Variation Based on Microseismic Monitoring and Numerical Simulation at the Working Face in the Dongjiahe Coal Mine. Shock and Vibration. 2019. Vol. 2019, no. 2019, pp.1-12.
https://search.emarefa.net/detail/BIM-1211475
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1211475